Su Qing joins Xingchuang Design as a probationary employee, only to be constantly exploited by veteran employee Liu Mei, who forces her to share workloads, takes advantage of her design materials without paying, and repeatedly steals credit for her work. Su Qing also suffers psychological manipulation and false accusations. Manager Zhang takes Liu Mei's side, and the two, threatened by Su Qing's abilities, set a trap to frame her for leaking confidential information. Su Qing is subsequently fired. However, her true identity is a corporate group inspector and supervisor, and her employment was actually an undercover investigation into the department's misconduct. Returning to the company, she presents complete evidence and exposes the wrongdoing of Liu Mei and Manager Zhang. Even Lin Min, who had secretly used her to advance her own career, is exposed.